Corynebacterium pseudotuberculosis

Corynebacterium pseudotuberculosis has been cultured from some cases (particularly of ulcerative lymphangitis; however, in others, bacterial culture is negative.

"This bacterial infection is caused by Corynebacterium pseudotuberculosis and characterized by deep intramuscular (and sometimes internal) abscesses in horses."

Caseous lymphadenitis (CLA) is an infectious disease caused by the bacterium Corynebacterium pseudotuberculosis found mostly in goats and sheep that at present has no cure.

However, it should be remembered that intracellular organisms such as Corynebacterium pseudotuberculosis will be susceptible to certain antibiotics in-vitro that are not effective for the specific organism in the horse.